968 hedge funds and large institutions have $58.9B invested in Biogen in 2015 Q4 according to their latest regulatory filings, with 139 funds opening new positions, 330 increasing their positions, 372 reducing their positions, and 82 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

more capital invested

Capital invested by funds: $ → $

more funds holding in top 10

Funds holding in top 10:

11% less repeat investments, than reductions

Existing positions increased: 330 | Existing positions reduced: 372

24% less call options, than puts

Call options by funds: $1.24B | Put options by funds: $1.63B

Holders
968
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
37
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.24B
Puts
$1.63B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
776
$321K
777
$321K
778
$320K
779
$316K
780
$314K
781
$313K
782
$306K
783
$306K
784
$306K
785
$306K
786
$306K
787
$306K
788
$302K
789
$302K
790
$300K
791
$300K
792
$297K
793
$294K
794
$294K
795
$288K
796
$285K
797
$281K
798
$281K
799
$278K
800
$276K